Process for making microporous fibers with improved properties

Details Process for making microporous fibers with improved properties Process for making microporous fibers with improved properties

1996-09-04

1998-06-09

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

28220, 28240, 264129, 264154, 2642104, 2642105, 2642106, 2642107, 2642108, 2642356, 2642888, 2642896, 2642905, 264346, 425 66, 425 71, 425 90, 425 93, 425445, D01D 5247

Patent

active

057628408

ABSTRACT:
A distinctive technique for making porous fiber includes a stretching of a substantially continuous fiber while the fiber is in an operative association with an effective quantity of surface-active material. The fiber can be produced from a source material which includes a thermoplastic, orientable material and at least about 0.35 weight percent (wt %) of a supplemental material. In particular configurations of the invention, the fiber may be contacted with a first quantity of surface-active fluid and at least a separate, second quantity of surface-active fluid. In other configurations, the fiber may be subjected to an additional incremental stretching.

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